A child with normal pure tone audiometry but difficulty understanding speech in noise, following complex verbal instructions, and auditory memory deficit is evaluated for auditory processing disorder (APD). Which test battery is used to diagnose APD?
- A SCAN-3 or Buffalo Model test battery including dichotic digits, frequency pattern test, and speech-in-noise tests ✓
- B ABR (Auditory Brainstem Response) and DPOAE
- C Behavioural observation audiometry and visual reinforcement audiometry
- D Otoacoustic emissions and acoustic reflex testing
Correct answer: A. SCAN-3 or Buffalo Model test battery including dichotic digits, frequency pattern test, and speech-in-noise tests
Explanation
Auditory Processing Disorder (APD) is diagnosed in children with normal peripheral hearing (normal PTA and OAEs) who fail central auditory tests. The SCAN-3 (Screening Test for Auditory Processing Disorders) and similar batteries include dichotic listening tests (dichotic digits, competing sentences), monaural low redundancy tests, and temporal processing tests (frequency pattern test, gap detection). ABR and OAEs assess peripheral function and do not diagnose APD.
Reference: Dhingra Diseases of Ear, Nose and Throat, 7th ed.
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Written and medically reviewed by the StethoPrep medical team.